Question: A pump must flow oil ( oil = 7 0 0 kg / m 3 ) from an open storage tank buried in the ground.

A pump must flow oil ( oil =700 kg/m3) from an open storage tank buried in the ground. The pump is installed 3 m above the oil surface in the storage tank. If the outside air pressure =100 kPa, the pressure loss due to friction along the suction line is 20 kPa, the oil vapor pressure at operating conditions is 15 kPa. Calculate the NPSH (Net Positive Suction Head) available system (g =9.8 m/sec2)

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